feat: stabilize KYC, international assets and multi-currency schema

- Split mother's name in KYC (last/first)
- Added mileage_unit and fuel_type to Assets
- Expanded AssetCost for international VAT and original currency
- Fixed SQLAlchemy IndexError in asset catalog lookup
- Added exchange_rate and ratings tables to models

backend/app/models/gamification.py

@@ -1,8 +1,14 @@
+import uuid
 from datetime import datetime
-from typing import Optional
+from typing import Optional, TYPE_CHECKING
 from sqlalchemy import ForeignKey, String, Integer, DateTime, func, Boolean
-from sqlalchemy.orm import Mapped, mapped_column
-from app.db.base import Base 
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from sqlalchemy.dialects.postgresql import UUID as PG_UUID
+from app.db.base_class import Base 
+
+# Típusvizsgálathoz a körkörös import elkerülése érdekében
+if TYPE_CHECKING:
+    from app.models.identity import User
 
 # Közös beállítás az összes táblához ebben a fájlban
 SCHEMA_ARGS = {"schema": "data"}
@@ -36,21 +42,26 @@ class PointsLedger(Base):
     __tablename__ = "points_ledger"
     __table_args__ = SCHEMA_ARGS
     id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
-    # JAVÍTVA: data.users.id hivatkozás
     user_id: Mapped[int] = mapped_column(Integer, ForeignKey("data.users.id"))
     points: Mapped[int] = mapped_column(Integer)
     reason: Mapped[str] = mapped_column(String)
     created_at: Mapped[datetime] = mapped_column(DateTime, default=func.now())
+    
+    # Kapcsolat a felhasználóhoz
+    user: Mapped["User"] = relationship("User")
 
 class UserStats(Base):
     __tablename__ = "user_stats"
     __table_args__ = SCHEMA_ARGS
-    id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
-    # JAVÍTVA: data.users.id hivatkozás
-    user_id: Mapped[int] = mapped_column(Integer, ForeignKey("data.users.id"), unique=True)
-    total_points: Mapped[int] = mapped_column(Integer, default=0)
+    # user_id a PK, mert 1:1 kapcsolat a User-rel
+    user_id: Mapped[int] = mapped_column(Integer, ForeignKey("data.users.id"), primary_key=True)
+    total_xp: Mapped[int] = mapped_column(Integer, default=0)
+    social_points: Mapped[int] = mapped_column(Integer, default=0)
     current_level: Mapped[int] = mapped_column(Integer, default=1)
-    last_activity: Mapped[datetime] = mapped_column(DateTime, default=func.now())
+    updated_at: Mapped[datetime] = mapped_column(DateTime, default=func.now(), onupdate=func.now())
+
+    # EZ A JAVÍTÁS: A visszamutató kapcsolat definiálása
+    user: Mapped["User"] = relationship("User", back_populates="stats")
 
 class Badge(Base):
     __tablename__ = "badges"
@@ -64,7 +75,18 @@ class UserBadge(Base):
     __tablename__ = "user_badges"
     __table_args__ = SCHEMA_ARGS
     id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
-    # JAVÍTVA: data.users.id hivatkozás
     user_id: Mapped[int] = mapped_column(Integer, ForeignKey("data.users.id"))
     badge_id: Mapped[int] = mapped_column(Integer, ForeignKey("data.badges.id"))
-    earned_at: Mapped[datetime] = mapped_column(DateTime, default=func.now())
+    earned_at: Mapped[datetime] = mapped_column(DateTime, default=func.now())
+    
+    user: Mapped["User"] = relationship("User")
+
+class Rating(Base): # <--- Az új értékelési modell
+    __tablename__ = "ratings"
+    __table_args__ = SCHEMA_ARGS
+    id: Mapped[uuid.UUID] = mapped_column(PG_UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    author_id: Mapped[int] = mapped_column(Integer, ForeignKey("data.users.id"))
+    target_type: Mapped[str] = mapped_column(String(20))
+    target_id: Mapped[uuid.UUID] = mapped_column(PG_UUID(as_uuid=True))
+    score: Mapped[int] = mapped_column(Integer)
+    comment: Mapped[Optional[str]] = mapped_column(String)